Ball-bearing.



n. F. GRAHAM. BALL BEARING.

' APPLICATION FILED OCT-21,1909.

. Patented Apr. 113, 1915.

IINVENTQRI ATTORNEY WITNESSES:

HAVID 1E. GI'IAIII, 01F BR-ISZCUL, CONNECTICUT, ASSIGNOR TU 'IHEDEPARTURE MANUFACTURING COMPANY, OF BRISTOL, CONNECTICUT, A CORPORATIONOF (KIN- NECTICUT.

BALL-BEARING.

I,t35,tt't'.

Application filed October 21,

TM whom it may concern Be it known that I, DAVID F. GRAHAM, a

I: ,citizen of the United States, residing at panying drawings, formingpart of this specification.

My invention relates to ball bear1ngs,,and more particularly to suchbearmgs embody-' ing a plurality of rows of load-supporting balls.

One object is to produce a multiple-row bearing in which all binding isobviated, the parts'of the bearing being, nevertheless, securely held inproper position with respect to each other.

A further object is to produce an efficient bearing of the characterjust above indicated at low costpf manufacture.

A further object is to provide an inexpensive and eliicient separator.

To these ends,.and also to improve generally upon devices of thecharacter indicated, my invention consists in the various mattershereinafter described and claimed.

In the accompanying drawings Figure 1 is a sectional elevation of theassembled bearing; Figs. 2 and 3 are end elevations of the same; Fig. 4is a sectional elevation of one-half of the outer race member; Fig. 5 isa side elevation of the inner race-member; and Fig. 6 is a top plan viewof the separator.

In the illustrated embodiment of my invention, the rows of balls 1, 2and 3, are/ interposedbetween an inner race-member 1 and an outerrace-member 5. One row of balls, 1,,is seated in matching grooves orraceways 6 and 7 formed respectively in the outer surface of the innerrace-member and the inner surface of the outer race-memher. But each ofthe other rows of balls, 2 and 3, is seated in a groove, 8 and 9respectively, in only one of the said race-memhere, the other of saidrace-members having a broad surface 10 along which the balls can freelyadjust themselves. Thus, the row 1 'offthe balls, seated in both grooves6 and 7 serves, to lock the elements pf the bearing Specification ofLetters Patent.

; of a plurality of raceways is Patented Apr. I3, 119th.

1909. Serial No. 523,824.

against lateral displacement, but the other rows, 2 and 3,although heldby their grooves 8 and 9 against displacement and loss, are,nevertheless, free to move laterally along the flat surface 10 of theouter race-member 5. In this way all three rows of balls support theload but there is neither binding nor objectionable looseness, the ballsof the rows 2 and 3 being free to find their own seats upon the outerrace-member." Only one row of balls locks the parts against lateraldisplacement and each row can assume perfect alinement (vertical, as thebearing is illustrated) to enable it to best support the load. Accurategrinding or adjustment thus obviated and the present bearing can,therefore, be inexpensively manufactured and assembled.

As illustrated, the inner race-member 4 has merely the three periph ralgrooves or raceways 6, 8 and 9, while Ike outer racemember has only onegroove 7 and the plain, broad bearing surface 10. Manifestly, ifdesired, the outer race-member 5 could be provided with the grooves 8and 9 and the inner race-member could have the broad surface'l0.

As illustrated, the outer race-member 5 has no portion projectinginwardly (i. 6., toward the-race-member 4) between the right hand edgeof the race-member and the broad surface, against which the rows ofballs 2 and 3 bear; that is to say, all portions of said race-member 5from the broad bearing surface supporting the balls 2 to and includingsaid edge of the race-member lie upon the outer side of the horizontalline of said bearing surface. Therefore, to assemble, the balls 2 and 3are placed in their grooves in the inner race-member, and the outerrace-member is then merely slid into position over said balls, thusholding them.in place. The balls 1 are then suitably inserted andconfined in their cotiperating grooves 6 and 7, the whole bearing beingthus locked together.

In the illustrated embodiment 6f the invention, the space between theoiiter edges of the grooves '6 and 7 is slightly less than separator andalso has rows of openings or seats 13 for the other rows of balls, saidopenings 13 being formed in and surrounded by said web. Such a separatorallows the balls of a row to lie close together, is insigpessivelymanufactured and is readily assembled, the rows 2 and3 balls holding itagainst end-wise displacement.

Thus, the present bearing provides a plu rality of rows ofload-supporting balls, the

' parts are securely locked against displacement, but there is neitherbinding nor objectionable looseness, a single row of balls servingto-hold the race-members in position while the remaining rows are freeto find their own appropriate seats. Each row of balls assumestheperfect alinement in which it can best support the load. Furthermore,the parts can be inexpensively made. and assembled. And I-have alsoprovided an eflicient and inexpensive separator which permits the-use ofa maximum number of balls in each row and is readily assembled andsecurely held in positlon.

Having thus described my invention, what. I claim as new and desire tosecure by Letters Patent is 1. In an antifriction bearing, thecombination with race-members, and a lurality of rows of antifrictionmembers, 0 a separator having seats formed in and surrounded by the webof its body for the antifriction members of one row and seats alsoformed in said web but opening at the edge of said separator for anotherrow of antifriction members; substantially as described.

2. A-separator' comprising a piece of material having seats formed inand surrounded b the web of its body for antifriction mem ers and alsohaving seats also formed in said web but opening at its edge for suchmembers; substantially as described.

In testimony whereof, I hereunto aflix my signature, in the presence oftwo witnesses. I

DAVID F. GRAHAM.

Witness es:

W. E. WIGI-ITMAN, GALES P. Moons.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. C.

